Added DownsampleTransform

Downsample the rows and columns of a matrix.
Adding myself to bib
Revert "Adding myself to bib"

This reverts commit 0f0a32132ede26378db806c4705e7749028333ca.
DownsampleTransform and adding myself to openbr.bib
Revert "DownsampleTransform and adding myself to openbr.bib"

This reverts commit 64df774691dfb2bd3abd5fcf4a01a37d4413038e.
DownsampleTransform and adding myself to openbr.bib
Merge pull request #19 from biometrics/transforms

Added DownsampleTransform